The present invention relates to electronic devices, in particular organic electroluminescent devices, comprising compounds of the formula (1), to the corresponding compounds, and to a process for the preparation of these compounds.
The present invention relates to electronic devices, in particular organic electroluminescent devices, comprising compounds of the formula (1), to the corresponding compounds, and to a process for the preparation of these compounds.
Visible-Light-Photocatalyzed Synthesis of Phenanthridinones and Quinolinones via Direct Oxidative C–H Amidation
作者:Yonghoon Moon、Eunyoung Jang、Soyeon Choi、Sungwoo Hong
DOI:10.1021/acs.orglett.7b03600
日期:2018.1.5
A straightforward synthetic strategy to construct biologically relevant phenanthridinones and quinolinones was developed via visible-light-promoted direct oxidative C-H amidation. In this photocatalytic system, amidyl radicals can be generated by homolysis of the N-H bond of simple amide precursors via single-electron transfer under blue LED illumination, which leads to oxidative intramolecular C-H amidation. Moreover, an efficient synthetic strategy using a photocascade enabled facile assembly of quinolinone structures through a catalytic sequence involving triplet energy (E-T) transfer based E/Z olefin isomerization and subsequent photocatalytic generation of amidyl radical intermediates.